randconfig build error with next-20150318, in drivers/vfio/virqfd.c

[Jim Davis]

This time, in plain text!

Building with the attached random configuration file,

drivers/vfio/virqfd.c: In function 'vfio_virqfd_enable':
drivers/vfio/virqfd.c:132:2: error: implicit declaration of function
'eventfd_ctx_fileget' [-Werror=implicit-function-declaration]
  ctx = eventfd_ctx_fileget(irqfd.file);
  ^
drivers/vfio/virqfd.c:132:6: warning: assignment makes pointer from
integer without a cast
  ctx = eventfd_ctx_fileget(irqfd.file);
      ^
  CC      drivers/tty/serial/serial_core.o
cc1: some warnings being treated as errors
scripts/Makefile.build:258: recipe for target 'drivers/vfio/virqfd.o' failed
HEAD is now at 78c876aef4f28... Add linux-next specific files for 20150318
  CLEAN   .
  CLEAN   arch/x86/kernel/cpu
  CLEAN   arch/x86/kernel
  CLEAN   arch/x86/purgatory
  CLEAN   arch/x86/realmode/rm
  CLEAN   arch/x86/vdso
  CLEAN   crypto/asymmetric_keys
  CLEAN   kernel/time
  CLEAN   kernel
  CLEAN   usr
  CLEAN   arch/x86/tools
  CLEAN   .tmp_versions
  CLEAN   scripts/basic
  CLEAN   scripts/genksyms
  CLEAN   scripts/kconfig
  CLEAN   scripts/mod
  CLEAN   scripts
  CLEAN   include/config include/generated arch/x86/include/generated
  CLEAN   .version signing_key.priv signing_key.x509 x509.genkey
Removing arch/x86/vdso/vdso-image-64.c
  HOSTCC  scripts/basic/fixdep
  HOSTCC  scripts/kconfig/conf.o
  SHIPPED scripts/kconfig/zconf.tab.c
  SHIPPED scripts/kconfig/zconf.lex.c
  SHIPPED scripts/kconfig/zconf.hash.c
  HOSTCC  scripts/kconfig/zconf.tab.o
  HOSTLD  scripts/kconfig/conf
scripts/kconfig/conf --randconfig Kconfig
KCONFIG_SEED=0x68B9BF68
#
# configuration written to .config
#
scripts/kconfig/conf --silentoldconfig Kconfig
  SYSTBL  arch/x86/syscalls/../include/generated/asm/syscalls_32.h
  SYSHDR  arch/x86/syscalls/../include/generated/uapi/asm/unistd_32.h
  SYSHDR  arch/x86/syscalls/../include/generated/uapi/asm/unistd_x32.h
  SYSHDR  arch/x86/syscalls/../include/generated/uapi/asm/unistd_64.h
  HOSTCC  scripts/basic/bin2c
  CHK     include/config/kernel.release
  WRAP    arch/x86/include/generated/asm/early_ioremap.h
  WRAP    arch/x86/include/generated/asm/dma-contiguous.h
  WRAP    arch/x86/include/generated/asm/mcs_spinlock.h
  WRAP    arch/x86/include/generated/asm/clkdev.h
  WRAP    arch/x86/include/generated/asm/scatterlist.h
  WRAP    arch/x86/include/generated/asm/cputime.h
  CHK     include/generated/uapi/linux/version.h
  UPD     include/generated/uapi/linux/version.h
  HOSTCC  scripts/recordmcount
  HOSTCC  scripts/kallsyms
  HOSTCC  scripts/pnmtologo
  HOSTCC  scripts/genksyms/genksyms.o
  CC      scripts/mod/empty.o
  UPD     include/config/kernel.release
  HOSTCC  scripts/mod/mk_elfconfig
  CC      scripts/mod/devicetable-offsets.s
  SHIPPED scripts/genksyms/parse.tab.c
  MKELF   scripts/mod/elfconfig.h
  SHIPPED scripts/genksyms/lex.lex.c
  HOSTCC  scripts/mod/modpost.o
  SHIPPED scripts/genksyms/keywords.hash.c
  SHIPPED scripts/genksyms/parse.tab.h
  HOSTCC  scripts/sortextable
  HOSTCC  scripts/genksyms/parse.tab.o
  HOSTCC  scripts/mod/sumversion.o
  HOSTCC  scripts/genksyms/lex.lex.o
  HOSTCC  scripts/asn1_compiler
  GEN     scripts/mod/devicetable-offsets.h
  HOSTCC  scripts/mod/file2alias.o
  HOSTLD  scripts/genksyms/genksyms
  HOSTLD  scripts/mod/modpost
  HOSTCC  arch/x86/tools/relocs_common.o
  HOSTCC  arch/x86/tools/relocs_64.o
  HOSTCC  arch/x86/tools/relocs_32.o
  CHK     include/generated/utsrelease.h
  UPD     include/generated/utsrelease.h
  HOSTLD  arch/x86/tools/relocs
  CC      kernel/bounds.s
  GEN     include/generated/bounds.h
  CC      arch/x86/kernel/asm-offsets.s
  GEN     include/generated/asm-offsets.h
  CALL    scripts/checksyscalls.sh
  CHK     include/generated/compile.h
  CC      init/main.o
  CC      init/do_mounts.o
  CC      init/initramfs.o
  CC      init/do_mounts_initrd.o
  CC      init/init_task.o
  CC      init/calibrate.o
  UPD     include/generated/compile.h
  HOSTCC  usr/gen_init_cpio
  CC      init/version.o
  GEN     usr/initramfs_data.cpio.lz4
  CC      arch/x86/kernel/process_32.o
  AS      arch/x86/crypto/aes-i586-asm_32.o
  CC      kernel/fork.o
  CC      kernel/exec_domain.o
  AS      usr/initramfs_data.o
  CC      arch/x86/crypto/aes_glue.o
  CC      arch/x86/mm/init.o
  LD      usr/built-in.o
  CC      arch/x86/mm/init_32.o
  LD      init/mounts.o
  LD      init/built-in.o
  CC      arch/x86/mm/fault.o
  AS      arch/x86/crypto/aesni-intel_asm.o
  CC      mm/filemap.o
  CC      arch/x86/crypto/aesni-intel_glue.o
  CC      arch/x86/kernel/signal.o
  CC      kernel/panic.o
  CC      arch/x86/mm/ioremap.o
  CC      arch/x86/mm/extable.o
  CC      arch/x86/mm/pageattr.o
  CC      arch/x86/crypto/fpu.o
  CC      kernel/cpu.o
  CC      arch/x86/mm/mmap.o
  AS      arch/x86/kernel/entry_32.o
  CC      arch/x86/crypto/crc32c-intel_glue.o
  CC      arch/x86/kernel/traps.o
  CC      arch/x86/mm/pat.o
  CC      arch/x86/mm/pgtable.o
  CC      kernel/exit.o
  CC [M]  arch/x86/crypto/glue_helper.o
  CC      kernel/softirq.o
  CC      arch/x86/mm/physaddr.o
  CC      arch/x86/mm/gup.o
  CC      arch/x86/kernel/irq.o
  CC      arch/x86/kernel/irq_32.o
  CC      mm/mempool.o
  CC      arch/x86/mm/setup_nx.o
  CC      arch/x86/mm/pat_rbtree.o
  AS [M]  arch/x86/crypto/twofish-i586-asm_32.o
  CC [M]  arch/x86/crypto/twofish_glue.o
  CC      arch/x86/mm/tlb.o
  CC      arch/x86/kernel/dumpstack_32.o
  CC      kernel/resource.o
  CC      arch/x86/mm/pgtable_32.o
  CC      kernel/sysctl.o
  AS [M]  arch/x86/crypto/salsa20-i586-asm_32.o
  CC      arch/x86/kernel/time.o
  CC      mm/oom_kill.o
  CC [M]  arch/x86/crypto/salsa20_glue.o
  CC      arch/x86/mm/iomap_32.o
  CC      arch/x86/kernel/ioport.o
  CC      arch/x86/mm/dump_pagetables.o
  AS [M]  arch/x86/crypto/serpent-sse2-i586-asm_32.o
  CC [M]  arch/x86/crypto/serpent_sse2_glue.o
  CC      kernel/sysctl_binary.o
  CC      arch/x86/kernel/ldt.o
  CC      arch/x86/kernel/dumpstack.o
  CC      kernel/capability.o
  CC      mm/maccess.o
  CC      arch/x86/mm/highmem_32.o
  LD      arch/x86/crypto/aes-i586.o
  LD      arch/x86/crypto/aesni-intel.o
  LD      arch/x86/crypto/crc32c-intel.o
  LD [M]  arch/x86/crypto/twofish-i586.o
  CC      mm/page_alloc.o
  LD [M]  arch/x86/crypto/salsa20-i586.o
  CC      arch/x86/kernel/nmi.o
  LD [M]  arch/x86/crypto/serpent-sse2-i586.o
  CC      kernel/ptrace.o
  LD      arch/x86/crypto/built-in.o
  LD      arch/x86/net/built-in.o
  CC      mm/page-writeback.o
  LD      arch/x86/platform/ce4100/built-in.o
  CC      arch/x86/platform/efi/quirks.o
  CC      arch/x86/mm/kmmio.o
  CC      kernel/user.o
  CC      arch/x86/kernel/setup.o
  CC      kernel/signal.o
  CC      arch/x86/kernel/x86_init.o
  CC      kernel/sys.o
  CC      arch/x86/platform/efi/efi.o
  CC      arch/x86/mm/pf_in.o
  CC      arch/x86/kernel/i8259.o
  CC      arch/x86/kernel/irqinit.o
  CC      arch/x86/mm/mmio-mod.o
  CC      arch/x86/platform/efi/efi_32.o
  CC      arch/x86/kernel/jump_label.o
  CC      mm/readahead.o
  CC      arch/x86/kernel/irq_work.o
  AS      arch/x86/platform/efi/efi_stub_32.o
  CC      arch/x86/kernel/probe_roms.o
  CC      arch/x86/kernel/i386_ksyms_32.o
  CC      arch/x86/mm/mpx.o
  CC      arch/x86/platform/efi/early_printk.o
  CC      kernel/kmod.o
  CC      arch/x86/kernel/syscall_32.o
  CC      arch/x86/kernel/vsyscall_gtod.o
  CC      mm/swap.o
  LD      arch/x86/platform/efi/built-in.o
  CC      arch/x86/platform/geode/alix.o
  CC      arch/x86/kernel/ksysfs.o
  CC      arch/x86/kernel/bootflag.o
  CC      mm/truncate.o
  CC      kernel/workqueue.o
  CC [M]  arch/x86/mm/testmmiotrace.o
  LD      arch/x86/platform/geode/built-in.o
  LD      arch/x86/platform/intel-mid/built-in.o
  LD      arch/x86/platform/goldfish/built-in.o
  LD      arch/x86/mm/mmiotrace.o
  CC      kernel/pid.o
  LD      arch/x86/mm/built-in.o
  LD      arch/x86/platform/intel-quark/built-in.o
  CC      arch/x86/kernel/e820.o
  CC      arch/x86/realmode/init.o
  LD      arch/x86/platform/iris/built-in.o
  LD      arch/x86/platform/olpc/built-in.o
  LD      arch/x86/platform/scx200/built-in.o
  AS      arch/x86/realmode/rm/header.o
  CC      arch/x86/platform/sfi/sfi.o
  AS      arch/x86/realmode/rm/trampoline_32.o
  AS      arch/x86/realmode/rm/stack.o
  AS      arch/x86/realmode/rm/reboot.o
  AS      arch/x86/realmode/rm/wakeup_asm.o
  CC      mm/vmscan.o
  CC      arch/x86/realmode/rm/wakemain.o
  CC      arch/x86/realmode/rm/video-mode.o
  CC      mm/shmem.o
  AS      arch/x86/realmode/rm/copy.o
  LD      arch/x86/platform/sfi/built-in.o
  AS      arch/x86/realmode/rm/bioscall.o
  CC      arch/x86/realmode/rm/regs.o
  LD      arch/x86/platform/ts5500/built-in.o
  CC      arch/x86/realmode/rm/video-vga.o
  LD      arch/x86/platform/uv/built-in.o
  LD      arch/x86/platform/built-in.o
  CC      arch/x86/realmode/rm/video-vesa.o
  CC      arch/x86/realmode/rm/video-bios.o
  CC      mm/util.o
  CC      mm/mmzone.o
  PASYMS  arch/x86/realmode/rm/pasyms.h
  CC      arch/x86/kernel/pci-dma.o
  LDS     arch/x86/realmode/rm/realmode.lds
  CC      arch/x86/vdso/vma.o
  LD      arch/x86/realmode/rm/realmode.elf
  RELOCS  arch/x86/realmode/rm/realmode.relocs
  OBJCOPY arch/x86/realmode/rm/realmode.bin
  AS      arch/x86/realmode/rmpiggy.o
  CC      fs/open.o
  CC      fs/read_write.o
  LD      arch/x86/realmode/built-in.o
  CC      fs/file_table.o
  CC      arch/x86/vdso/vdso32-setup.o
  CC      kernel/task_work.o
  CC      mm/vmstat.o
  LDS     arch/x86/vdso/vdso32/vdso32.lds
  CC      arch/x86/kernel/quirks.o
  CC      arch/x86/vdso/vdso32/vclock_gettime.o
  CC      kernel/extable.o
  AS      arch/x86/vdso/vdso32/note.o
  CC      fs/super.o
  AS      arch/x86/vdso/vdso32/int80.o
  CC      kernel/params.o
  CC      arch/x86/kernel/topology.o
  HOSTCC  arch/x86/vdso/vdso2c
  CC      mm/backing-dev.o
  CC      fs/char_dev.o
  CC      fs/stat.o
  CC      arch/x86/kernel/kdebugfs.o
  AS      arch/x86/vdso/vdso32/sysenter.o
  CC      mm/mm_init.o
  CC      arch/x86/kernel/alternative.o
  CC      arch/x86/kernel/i8253.o
  CC      fs/exec.o
  CC      kernel/kthread.o
  CC      fs/pipe.o
  VDSO    arch/x86/vdso/vdso32-int80.so.dbg
  CC      arch/x86/kernel/pci-nommu.o
  CC      arch/x86/kernel/hw_breakpoint.o
  CC      mm/mmu_context.o
  CC      fs/namei.o
  CC      arch/x86/kernel/tsc.o
  CC      kernel/sys_ni.o
  CC      kernel/nsproxy.o
  VDSO    arch/x86/vdso/vdso32-sysenter.so.dbg
  CC      arch/x86/kernel/tsc_msr.o
  OBJCOPY arch/x86/vdso/vdso32-int80.so
  OBJCOPY arch/x86/vdso/vdso32-sysenter.so
  VDSO2C  arch/x86/vdso/vdso-image-32-int80.c
  VDSO2C  arch/x86/vdso/vdso-image-32-sysenter.c
  CC      mm/percpu.o
  CC      arch/x86/vdso/vdso-image-32-int80.o
  CC      fs/fcntl.o
  CC      arch/x86/kernel/io_delay.o
  CC      kernel/notifier.o
  CC      arch/x86/vdso/vdso-image-32-sysenter.o
  CC      fs/ioctl.o
  LD      arch/x86/vdso/built-in.o
  CC      arch/x86/kernel/rtc.o
  CC      fs/readdir.o
  CC      fs/select.o
  CC      ipc/mqueue.o
  CC      kernel/ksysfs.o
  CC      arch/x86/kernel/pci-iommu_table.o
  CC      kernel/cred.o
  CC      fs/dcache.o
  CC      arch/x86/kernel/resource.o
  CC      kernel/reboot.o
  CC      mm/slab_common.o
  CC      arch/x86/kernel/process.o
  CC      ipc/msgutil.o
  CC      kernel/async.o
  CC      fs/inode.o
  LD      ipc/built-in.o
  CC      kernel/smpboot.o
  CC      kernel/range.o
  CC      arch/x86/kernel/i387.o
  CC      security/keys/gc.o
  CC      arch/x86/kernel/xsave.o
  CC      kernel/bpf/core.o
  CC      mm/compaction.o
  CC      security/keys/key.o
  CC      kernel/events/core.o
  CC      kernel/events/ring_buffer.o
  CC      fs/attr.o
  CC      arch/x86/kernel/ptrace.o
  CC      kernel/bpf/syscall.o
  CC      security/keys/keyring.o
  CC      fs/bad_inode.o
  CC      kernel/events/callchain.o
  CC      fs/file.o
  CC      fs/filesystems.o
  CC      kernel/events/hw_breakpoint.o
  CC      mm/vmacache.o
  CC      arch/x86/kernel/tls.o
  CC      kernel/bpf/verifier.o
  CC      security/keys/keyctl.o
  CC      mm/interval_tree.o
  CC      kernel/events/uprobes.o
  CC      fs/namespace.o
  CC      fs/seq_file.o
  CC      arch/x86/kernel/step.o
  CC      mm/list_lru.o
  CC      security/keys/permission.o
  CC      arch/x86/kernel/i8237.o
  CC      kernel/bpf/hashtab.o
  CC      arch/x86/kernel/stacktrace.o
  CC      security/keys/process_keys.o
  CC      mm/workingset.o
  CC      fs/xattr.o
  CC      kernel/bpf/arraymap.o
  CC      arch/x86/kernel/acpi/boot.o
  CC      kernel/bpf/helpers.o
  CC      arch/x86/kernel/apic/apic.o
  LD      kernel/bpf/built-in.o
  CC      mm/debug.o
  CC      kernel/gcov/base.o
  CC      security/keys/request_key.o
  CC      fs/libfs.o
  CC      kernel/gcov/fs.o
  CC      mm/gup.o
  CC      arch/x86/kernel/acpi/sleep.o
  CC      security/keys/request_key_auth.o
  CC      fs/fs-writeback.o
  LD      kernel/events/built-in.o
  CC      kernel/gcov/gcc_4_7.o
  CC      kernel/irq/irqdesc.o
  AS      arch/x86/kernel/acpi/wakeup_32.o
  CC      arch/x86/kernel/acpi/cstate.o
  CC      security/keys/user_defined.o
  CC      security/keys/proc.o
  CC      mm/highmem.o
  CC      arch/x86/kernel/apic/apic_noop.o
  LD      kernel/gcov/built-in.o
  CC      kernel/irq/handle.o
  LD      kernel/livepatch/built-in.o
  CC      kernel/locking/mutex.o
  CC      security/keys/persistent.o
  LD      arch/x86/kernel/acpi/built-in.o
  CC [M]  security/keys/trusted.o
  CC      arch/x86/kernel/apic/ipi.o
  CC      arch/x86/kernel/cpu/intel_cacheinfo.o
  LD      security/keys/built-in.o
  CC      arch/x86/kernel/cpu/scattered.o
  CC      mm/memory.o
  CC      kernel/irq/manage.o
  CC      arch/x86/kernel/cpu/topology.o
  CC      arch/x86/kernel/cpu/common.o
  CC      arch/x86/kernel/apic/vector.o
  CC      arch/x86/kernel/cpu/rdrand.o
  CC      kernel/locking/semaphore.o
  CC      arch/x86/kernel/cpu/match.o
  CC      security/commoncap.o
  CC      arch/x86/kernel/apic/hw_nmi.o
  CC      kernel/irq/spurious.o
  CC      arch/x86/kernel/cpu/proc.o
  CC      kernel/locking/rwsem.o
  CC      fs/pnode.o
  MKCAP   arch/x86/kernel/cpu/capflags.c
  CC      mm/mincore.o
  CC      arch/x86/kernel/apic/io_apic.o
  CC      kernel/locking/mutex-debug.o
  CC      kernel/irq/resend.o
  CC      security/min_addr.o
  CC      fs/splice.o
  CC      kernel/irq/chip.o
  CC      security/inode.o
  CC      mm/mlock.o
  CC      kernel/locking/lockdep.o
  CC      kernel/locking/lockdep_proc.o
  CC      kernel/irq/dummychip.o
  LD      security/built-in.o
  CC      mm/mmap.o
  CC      kernel/irq/devres.o
  CC      crypto/api.o
  CC      kernel/irq/generic-chip.o
  CC      fs/sync.o
  CC      arch/x86/kernel/apic/bigsmp_32.o
  CC      kernel/irq/autoprobe.o
  CC      kernel/locking/spinlock.o
  CC      arch/x86/kernel/apic/probe_32.o
  CC      crypto/cipher.o
  CC      kernel/irq/irqdomain.o
  CC      kernel/irq/proc.o
  CC      fs/utimes.o
  CC      crypto/compress.o
  CC      kernel/locking/osq_lock.o
  CC      kernel/locking/lglock.o
  CC      kernel/irq/migration.o
  LD      arch/x86/kernel/apic/built-in.o
  CC      arch/x86/kernel/kprobes/core.o
  CC      crypto/memneq.o
  CC      kernel/irq/pm.o
  CC      fs/stack.o
  CC      crypto/crypto_wq.o
  CC      kernel/locking/rtmutex.o
  CC      crypto/algapi.o
  CC      fs/fs_struct.o
  CC      arch/x86/kernel/kprobes/opt.o
  CC      mm/mprotect.o
  LD      kernel/irq/built-in.o
  CC      kernel/power/qos.o
  CC      crypto/scatterwalk.o
  CC      arch/x86/kernel/kprobes/ftrace.o
  CC      kernel/locking/spinlock_debug.o
  CC      fs/statfs.o
  CC      mm/mremap.o
  LD      arch/x86/kernel/kprobes/built-in.o
  CC      arch/x86/kernel/reboot.o
  CC      crypto/proc.o
  CC      crypto/aead.o
  CC      kernel/power/main.o
  CC      kernel/locking/rwsem-xadd.o
  CC      crypto/ablkcipher.o
  CC      mm/msync.o
  CC      fs/fs_pin.o
  CC      crypto/blkcipher.o
  CC      fs/nsfs.o
  CC      kernel/locking/percpu-rwsem.o
  CC      mm/rmap.o
  CC      kernel/power/process.o
  CC      kernel/locking/qrwlock.o
  CC      crypto/chainiv.o
  CC      fs/buffer.o
  CC      crypto/eseqiv.o
  CC      kernel/power/suspend.o
  CC      crypto/ahash.o
  CC [M]  kernel/locking/locktorture.o
  CC      crypto/shash.o
  CC      crypto/pcompress.o
  CC      mm/vmalloc.o
  LD      kernel/locking/built-in.o
  CC      kernel/printk/printk.o
  CC      crypto/algboss.o
  CC      kernel/power/autosleep.o
  CC      crypto/testmgr.o
  CC      crypto/crypto_null.o
  CC      kernel/power/wakelock.o
  CC      fs/block_dev.o
  CC      crypto/md5.o
  CC      fs/direct-io.o
  CC      kernel/power/poweroff.o
  LD      kernel/printk/built-in.o
  CC      kernel/rcu/update.o
  CC      crypto/sha1_generic.o
  LD      kernel/power/built-in.o
  CC      kernel/sched/core.o
  CC      mm/pagewalk.o
  CC      crypto/sha256_generic.o
  CC      fs/mpage.o
  CC      crypto/sha512_generic.o
  CC      mm/pgtable-generic.o
  CC      fs/proc_namespace.o
  CC      mm/init-mm.o
  CC      crypto/gf128mul.o
  CC      mm/nobootmem.o
  CC      mm/memblock.o
  CC      kernel/rcu/srcu.o
  LD      fs/autofs4/built-in.o
  CC [M]  fs/autofs4/init.o
  CC [M]  fs/autofs4/inode.o
  CC      crypto/cbc.o
  CC      mm/dmapool.o
  CC [M]  fs/autofs4/root.o
  CC      kernel/rcu/tree.o
  CC      mm/ksm.o
  CC      mm/slub.o
  CC      crypto/pcbc.o
  CC [M]  fs/autofs4/symlink.o
  CC      crypto/cts.o
  CC [M]  fs/autofs4/waitq.o
  CC      mm/failslab.o
  CC      crypto/lrw.o
  CC      mm/memtest.o
  CC      mm/migrate.o
  CC [M]  fs/autofs4/expire.o
  CC      mm/huge_memory.o
  CC      crypto/xts.o
  CC [M]  fs/autofs4/dev-ioctl.o
  CC      mm/kmemleak.o
  LD [M]  fs/autofs4/autofs4.o
  LD      fs/btrfs/built-in.o
  CC      crypto/pcrypt.o
  CC [M]  fs/btrfs/super.o
  CC      kernel/rcu/tree_trace.o
  CC      mm/page_owner.o
  CC      crypto/cryptd.o
  LD      kernel/rcu/built-in.o
  HZFILE  kernel/time/hz.bc
  CC      kernel/time/timer.o
  CC      mm/page_isolation.o
  CC      mm/zsmalloc.o
  CC      mm/early_ioremap.o
  CC      kernel/sched/proc.o
  CC      mm/cma.o
  CC      mm/page_ext.o
  CC      crypto/des_generic.o
  CC      kernel/sched/clock.o
  CC      mm/cma_debug.o
  CC [M]  mm/zpool.o
  CC [M]  mm/zbud.o
  LD      mm/built-in.o
  CC      kernel/sched/cputime.o
  CC      kernel/time/hrtimer.o
  CC      kernel/trace/trace_selftest_dynamic.o
  CC      crypto/fcrypt.o
  CC      kernel/time/itimer.o
  CC      block/bio.o
  CC      kernel/trace/trace_clock.o
  CC [M]  fs/btrfs/ctree.o
  CC      kernel/sched/idle_task.o
  CC      crypto/aes_generic.o
  CC      kernel/time/posix-timers.o
  CC      kernel/trace/ftrace.o
  CC      kernel/sched/fair.o
  CC      kernel/time/posix-cpu-timers.o
  CC      crypto/arc4.o
  CC      arch/x86/kernel/cpu/powerflags.o
  CC      kernel/time/timekeeping.o
  CC      arch/x86/kernel/cpu/bugs.o
  CC      crypto/seed.o
  CC      block/elevator.o
  CC      kernel/time/ntp.o
  CC      arch/x86/kernel/cpu/intel.o
  CC      crypto/salsa20_generic.o
  CC      kernel/time/clocksource.o
  CC      arch/x86/kernel/cpu/amd.o
  CC [M]  fs/btrfs/extent-tree.o
  CC      crypto/deflate.o
  CC      kernel/trace/ring_buffer.o
  CC      block/blk-core.o
  CC      crypto/zlib.o
  CC      kernel/time/jiffies.o
  CC      kernel/time/timer_list.o
  CC      arch/x86/kernel/cpu/cyrix.o
  CC      kernel/time/timeconv.o
  CC      crypto/crc32c_generic.o
  CC      arch/x86/kernel/cpu/centaur.o
  CC      kernel/time/timecounter.o
  CC      kernel/sched/rt.o
  CC      kernel/time/posix-clock.o
  CC      arch/x86/kernel/cpu/transmeta.o
  CC      crypto/crc32.o
  CC      kernel/time/alarmtimer.o
  CC      arch/x86/kernel/cpu/umc.o
  CC      arch/x86/kernel/cpu/perf_event.o
  CC      kernel/time/clockevents.o
  CC      crypto/crct10dif_common.o
  CC      kernel/sched/deadline.o
  CC      crypto/crct10dif_generic.o
  CC      kernel/time/tick-common.o
  CC      kernel/trace/trace.o
  CC      crypto/authenc.o
  CC      kernel/time/tick-broadcast.o
  CC      kernel/time/tick-broadcast-hrtimer.o
  CC      kernel/sched/stop_task.o
  CC      kernel/time/tick-oneshot.o
  CC      block/blk-tag.o
  CC      kernel/time/tick-sched.o
  CC      arch/x86/kernel/cpu/perf_event_amd.o
  CC      crypto/authencesn.o
  CC      kernel/time/timekeeping_debug.o
  CC      kernel/sched/wait.o
  BC      kernel/time/timeconst.h
  CC      kernel/time/time.o
  CC      block/blk-sysfs.o
  CC      arch/x86/kernel/cpu/perf_event_amd_uncore.o
  CC      arch/x86/kernel/cpu/perf_event_p6.o
  CC      kernel/sched/completion.o
  CC      arch/x86/kernel/cpu/perf_event_knc.o
  LD      kernel/time/built-in.o
  CC      crypto/lzo.o
  CC      kernel/kcmp.o
  CC      block/blk-flush.o
  CC      arch/x86/kernel/cpu/perf_event_p4.o
  CC      crypto/lz4hc.o
  CC      kernel/freezer.o
  CC      kernel/sched/idle.o
  CC      arch/x86/kernel/cpu/perf_event_intel_lbr.o
  CC [M]  fs/btrfs/print-tree.o
  CC      crypto/rng.o
  CC      kernel/profile.o
  CC      block/blk-settings.o
  CC      kernel/sched/cpupri.o
  CC      arch/x86/kernel/cpu/perf_event_intel_ds.o
  CC [M]  fs/btrfs/root-tree.o
  CC      kernel/trace/trace_output.o
  CC      arch/x86/kernel/cpu/perf_event_intel.o
  CC      crypto/krng.o
  CC      kernel/sched/cpudeadline.o
  CC      arch/x86/kernel/cpu/perf_event_intel_rapl.o
  CC [M]  fs/btrfs/dir-item.o
  CC      kernel/stacktrace.o
  CC      crypto/ghash-generic.o
  CC      kernel/sched/auto_group.o
  CC      block/blk-ioc.o
  CC      kernel/futex.o
  CC      arch/x86/kernel/cpu/perf_event_intel_uncore.o
  CC      crypto/asymmetric_keys/asymmetric_type.o
  CC [M]  fs/btrfs/file-item.o
  CC      kernel/sched/stats.o
  CC      arch/x86/kernel/cpu/perf_event_intel_uncore_snb.o
  CC      block/blk-map.o
  CC      kernel/trace/trace_seq.o
  CC      crypto/asymmetric_keys/signature.o
  CC      crypto/hash_info.o
  CC      kernel/sched/debug.o
  CC      crypto/ablk_helper.o
  CC      kernel/trace/trace_stat.o
  CC      crypto/asymmetric_keys/public_key.o
  CC      kernel/dma.o
  CC [M]  fs/btrfs/inode-item.o
  CC      block/blk-exec.o
  CC      arch/x86/kernel/cpu/perf_event_intel_uncore_snbep.o
  CC      kernel/trace/trace_printk.o
  CC      crypto/asymmetric_keys/rsa.o
  CC      kernel/smp.o
  CC [M]  crypto/seqiv.o
  CC      block/blk-merge.o
  CC [M]  fs/btrfs/inode-map.o
  ASN.1   crypto/asymmetric_keys/x509-asn1.c
  ASN.1   crypto/asymmetric_keys/x509_rsakey-asn1.c
  CC      crypto/asymmetric_keys/x509_public_key.o
  CC      kernel/trace/trace_sched_switch.o
  CC      arch/x86/kernel/cpu/perf_event_intel_uncore_nhmex.o
  CC [M]  fs/btrfs/disk-io.o
  CC [M]  crypto/crypto_user.o
  CC      kernel/trace/trace_functions.o
  LD      crypto/asymmetric_keys/asymmetric_keys.o
  CC      crypto/asymmetric_keys/x509-asn1.o
  CC      kernel/sched/cpuacct.o
  CC [M]  fs/btrfs/transaction.o
  CC      block/blk-softirq.o
fs/btrfs/disk-io.c: In function 'btrfs_check_super_valid':
fs/btrfs/disk-io.c:3927:21: warning: format '%lu' expects argument of type 'long unsigned int', but argument 3 has type 'unsigned int' [-Wformat=]
     + sizeof(struct btrfs_chunk));
                     ^
  CC      crypto/asymmetric_keys/x509_rsakey-asn1.o
  CC [M]  crypto/cmac.o
  CC      crypto/asymmetric_keys/x509_cert_parser.o
  CC      arch/x86/kernel/cpu/mcheck/mce.o
  CC [M]  crypto/hmac.o
  LD      kernel/sched/built-in.o
  CC      kernel/trace/trace_irqsoff.o
  CC      kernel/system_keyring.o
  CC      block/blk-timeout.o
  LD      crypto/asymmetric_keys/x509_key_parser.o
  LD      crypto/asymmetric_keys/built-in.o
  CC [M]  crypto/vmac.o
  CC [M]  crypto/xcbc.o
Generating X.509 key generation config
  CC      kernel/module.o
  CC [M]  fs/btrfs/inode.o
  CC      kernel/trace/trace_nop.o
  CC [M]  crypto/rmd160.o
  CC      block/blk-iopoll.o
  CC [M]  crypto/rmd256.o
  CC      kernel/trace/trace_mmiotrace.o
fs/btrfs/inode.c: In function 'check_direct_IO':
fs/btrfs/inode.c:8050:2: error: implicit declaration of function 'iov_iter_alignment' [-Werror=implicit-function-declaration]
  if (iov_iter_alignment(iter) & blocksize_mask)
  ^
fs/btrfs/inode.c:8061:26: error: dereferencing pointer to incomplete type
  for (seg = 0; seg < iter->nr_segs; seg++) {
                          ^
fs/btrfs/inode.c:8062:29: error: dereferencing pointer to incomplete type
   for (i = seg + 1; i < iter->nr_segs; i++) {
                             ^
fs/btrfs/inode.c:8063:12: error: dereferencing pointer to incomplete type
    if (iter->iov[seg].iov_base == iter->iov[i].iov_base)
            ^
fs/btrfs/inode.c:8063:39: error: dereferencing pointer to incomplete type
    if (iter->iov[seg].iov_base == iter->iov[i].iov_base)
                                       ^
fs/btrfs/inode.c: In function 'btrfs_direct_IO':
fs/btrfs/inode.c:8095:2: error: implicit declaration of function 'iov_iter_count' [-Werror=implicit-function-declaration]
  count = iov_iter_count(iter);
  ^
cc1: some warnings being treated as errors
scripts/Makefile.build:258: recipe for target 'fs/btrfs/inode.o' failed
make[2]: *** [fs/btrfs/inode.o] Error 1
make[2]: *** Waiting for unfinished jobs....
  CC      kernel/trace/blktrace.o
  CC      arch/x86/kernel/cpu/mcheck/mce-severity.o
  CC [M]  crypto/rmd320.o
  CC [M]  crypto/ecb.o
scripts/Makefile.build:403: recipe for target 'fs/btrfs' failed
make[1]: *** [fs/btrfs] Error 2
Makefile:964: recipe for target 'fs' failed
make: *** [fs] Error 2
make: *** Waiting for unfinished jobs....
  CC      block/blk-lib.o
  CC      block/blk-mq.o
  LD      arch/x86/kernel/cpu/mcheck/built-in.o
  CC      kernel/trace/trace_events.o
  CC      arch/x86/kernel/cpu/mtrr/main.o
  CC [M]  crypto/ctr.o
  CC [M]  crypto/gcm.o
  CC      kernel/trace/trace_export.o
  CC [M]  crypto/ccm.o
  CC      kernel/trace/trace_event_perf.o
  CC      block/blk-mq-tag.o
  CC      arch/x86/kernel/cpu/mtrr/if.o
  CC [M]  crypto/twofish_common.o
  CC      kernel/module_signing.o
  CC      arch/x86/kernel/cpu/mtrr/generic.o
  CC      kernel/trace/trace_events_filter.o
  CC      kernel/trace/trace_events_trigger.o
  CC [M]  crypto/serpent_generic.o
  CC      kernel/kallsyms.o
  CC      block/blk-mq-sysfs.o
  CC      block/blk-mq-cpu.o
  CC [M]  crypto/camellia_generic.o
  CC      block/blk-mq-cpumap.o
  CC      arch/x86/kernel/cpu/mtrr/cleanup.o
  CC      kernel/cgroup.o
  CC [M]  crypto/anubis.o
  CC      block/ioctl.o
  CC [M]  crypto/drbg.o
  CC      block/genhd.o
  CC      kernel/trace/power-traces.o
  CC      arch/x86/kernel/cpu/mtrr/amd.o
  CC [M]  crypto/tcrypt.o
  CC      arch/x86/kernel/cpu/mtrr/cyrix.o
  CC      kernel/trace/rpm-traces.o
  CC      arch/x86/kernel/cpu/mtrr/centaur.o
  CC [M]  crypto/af_alg.o
  CC      block/scsi_ioctl.o
  LD      arch/x86/kernel/cpu/mtrr/built-in.o
  CC      arch/x86/kernel/cpu/perfctr-watchdog.o
  CC      kernel/trace/trace_probe.o
  CC      kernel/trace/trace_uprobe.o
  CC      block/partition-generic.o
  CC      arch/x86/kernel/cpu/perf_event_amd_ibs.o
  CC [M]  crypto/algif_hash.o
  CC      block/ioprio.o
  CC [M]  crypto/algif_rng.o
  CC      kernel/trace/trace_benchmark.o
  CC      kernel/cgroup_freezer.o
  CC [M]  crypto/xor.o
  LD      crypto/crypto.o
  CC      arch/x86/kernel/cpu/vmware.o
  CC [M]  kernel/trace/ring_buffer_benchmark.o
  LD      crypto/crypto_algapi.o
  CC      block/partitions/check.o
  LD      crypto/crypto_blkcipher.o
  LD      crypto/crypto_hash.o
  LD      crypto/cryptomgr.o
  CC      block/bounce.o
  LD      crypto/built-in.o
  LD      kernel/trace/libftrace.o
  LD      kernel/trace/built-in.o
  CC      arch/x86/kernel/msr.o
  CC      block/bsg.o
  CC      arch/x86/kernel/cpu/hypervisor.o
  GZIP    kernel/config_data.gz
  CC      kernel/stop_machine.o
  CC      block/partitions/aix.o
  CC      kernel/kprobes.o
  CC      arch/x86/kernel/early-quirks.o
  CC      arch/x86/kernel/cpu/mshyperv.o
  CC      block/bsg-lib.o
  CC      block/partitions/mac.o
  CC      block/partitions/cmdline.o
  CC      arch/x86/kernel/cpu/capflags.o
  CC      block/noop-iosched.o
  LD      arch/x86/kernel/cpu/built-in.o
  CC      arch/x86/kernel/smp.o
  CC      kernel/watchdog.o
  CC      arch/x86/kernel/smpboot.o
  CC      block/partitions/msdos.o
  CC      block/partitions/osf.o
  CC      block/cmdline-parser.o
  CC      block/partitions/sun.o
  CC      block/bio-integrity.o
  CC      kernel/seccomp.o
  CC      kernel/relay.o
  CC      block/partitions/ultrix.o
  CC      block/partitions/karma.o
  CC      arch/x86/kernel/tsc_sync.o
  CC      block/blk-integrity.o
  CC      block/partitions/sysv68.o
  CC      arch/x86/kernel/setup_percpu.o
  CC      arch/x86/kernel/mpparse.o
  CC      arch/x86/kernel/reboot_fixups_32.o
  CC      kernel/tracepoint.o
  CC      block/t10-pi.o
  LD      block/partitions/built-in.o
  CC      arch/x86/kernel/ftrace.o
  CC      arch/x86/kernel/trace_clock.o
  CC      kernel/elfcore.o
  CC      arch/x86/kernel/crash_dump_32.o
  CC      kernel/irq_work.o
  CC      kernel/padata.o
  CC      arch/x86/kernel/module.o
  LD      block/built-in.o
  CC      kernel/crash_dump.o
  CC      kernel/jump_label.o
  CC      arch/x86/kernel/doublefault.o
  CC      arch/x86/kernel/vm86_32.o
  CC      arch/x86/kernel/early_printk.o
  CC      arch/x86/kernel/hpet.o
  CC [M]  kernel/torture.o
  CC      arch/x86/kernel/amd_nb.o
###
### Now generating an X.509 key pair to be used for signing modules.
###
### If this takes a long time, you might wish to run rngd in the
### background to keep the supply of entropy topped up.  It
### needs to be run as root, and uses a hardware random
### number generator if one is available.
###
openssl req -new -nodes -utf8 -"sha1" -days 36500 \
	-batch -x509 -config x509.genkey \
	-outform DER -out signing_key.x509 \
	-keyout signing_key.priv 2>&1
  CHK     kernel/config_data.h
Generating a 4096 bit RSA private key
..  CC      arch/x86/kernel/pcspeaker.o
..  CC      arch/x86/kernel/check.o
..  UPD     kernel/config_data.h
.  CC      arch/x86/kernel/pci-swiotlb.o
.........++
.....  CC      arch/x86/kernel/uprobes.o
......  CC      kernel/configs.o
........  CC      arch/x86/kernel/sysfb.o
.....  CC      arch/x86/kernel/sysfb_simplefb.o
...........  CC      arch/x86/kernel/sysfb_efi.o
.  CC      arch/x86/kernel/perf_regs.o
.......  CC      arch/x86/kernel/tracepoint.o
....  CC      arch/x86/kernel/pmc_atom.o
....  AS      arch/x86/kernel/head_32.o
.++
writing new private key to 'signing_key.priv'
-----
###
### Key pair generated.
###
  CC      arch/x86/kernel/head32.o
  CERTS   kernel/x509_certificate_list
  - Including cert ./signing_key.x509
  CC      arch/x86/kernel/head.o
  LDS     arch/x86/kernel/vmlinux.lds
  AS      kernel/system_certificates.o
  CC [M]  arch/x86/kernel/apm_32.o
  CC [M]  arch/x86/kernel/cpuid.o
  LD      kernel/built-in.o
  CC [M]  arch/x86/kernel/test_nx.o
  LD      arch/x86/kernel/built-in.o
  LD [M]  arch/x86/kernel/apm.o
  LD      arch/x86/built-in.o